Features:

• YOUR SAFETY SECURED: The Spare Air Emergency Tank was created after its inventor had a close call running out of air and barely escaping to the surface in time. With this simple backup tank you can ensure you'll always have enough air to return.
• SIMPLE TO USE: The Spare Air system is designed to be simple so you can access your backup air any time. This refillable cylinder can be handed off to a fellow diver in trouble and begin providing nitrox oxygen in a moment's notice.
• LOW PROFILE TANK: With it's small size and simple holster system this tank is out of the way when diving but easily accessible when you need it. Weighing under 4 lbs when full you can ignore this mini tank until you need it.
• EVERYTHING YOU NEED: This black anodized aluminum scuba tank comes with a black holster that attaches easily to your dive gear, a leash to prevent accidental loss, and a refill adapter to fill air off of scuba tanks. This package has all the equipment you need to dive with added safety.
• ALWAYS RETURN WITH AIR TO SPARE: After barely avoiding a catastrophe when he ran out of air on a dive Larry Williamson patented the Spare Air mini backup tank for divers. Spare Air has been ensuring safety for over 40 years with American made scuba tanks.

Details: Do you dive with Nitrox? If so, these are the Spare Air's for you. It is the perfect addition to your nitrox system, with quick and easy refills from your own nitrox scuba tank. Having a safety back-up breathable gas supply has many advantages over a standard alternate air source. The most obvious is that it is a separate breathable gas supply and allows self-rescue in an emergency out of breathable gas situation. We are taught to stay with our buddy so that in case of an emergency they are right there ready to help us. Next time you make a dive count the times your buddy is further then arms length from you. You will be surprised that they are much further away more often then you may think. Spare-Air gives you a major advantage over an alternate air source when an emergency arises. Having something to breathe from while you are swimming to your buddy, and then, getting their attention while they have their head in a hole watching a lobster can take several breaths or more of air. Tested and approved, Spare Air is a totally self-contained 3000 psi (207 bars) refillable backup breathable gas system. Now available in two models. The 300-N is a 3.0 cu. ft. (85 liter) of nitrox gas, refillable backup breathable gas system that's small and easy to use. It was designed to get you to the surface in the event of an emergency; yet, it is small enough to not even know you are wearing it! The 300-N provides approximately 57 surface breaths. The new 600-N 6.0 cu. ft. (170 liter